Finding the Fourth Proportional to 11,707.65, 17,543.79 and 4,680.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,707.65 : 17,543.79 = 4,680.72 : x
2. Step 2: Convert to fraction form
   11,707.65/17,543.79 = 4,680.72/x
3. Step 3: Cross multiply
   11,707.65x = 17,543.79 × 4,680.72
4. Step 4: Simplify right side
   11,707.65x = 82,117,568.73
5. Step 5: Solve for x
   x = 82,117,568.73/11,707.65
6. Step 6: Final answer
   x = 7,014.01